The solution for running on windows platform is to run the app from a free android emulator. I use BlueStack and it is good. You can also see the native resolution is probably 720p since it still look good enough on a bigger laptop screen.

If you already have Astro and Wah Li Tai channel, I think Astro give you access to tvbanywhere app for free. When login, just choose login via Astro and use your Astro ID and password.

If want to subscribe standalone, it is RM20/month for video-on-demand channels (mostly drama series), and RM20/month for live channels. If want both then it is RM40/month. Astro free app above gives you both.

If your parent has no Astro and just want drama series than subscribe to VoD package for RM20/month is enough. The live channel is about news, current variety shows etc.

For Malaysia subscriber, only the app is offered. But if you want to use it on Windows which has bigger screen display, then you can install Android emulator such as Bluestacks and run the app from there. No performance issue even when running from Bluestacks. I have also tried running the app from other Android emulator and no issue there as well, but cannot remember the name. Now I just go with Bluestacks.

Just tried running emulator with TVBAnywhere app again, and got black screen now. Other streaming app such as iQiYi still works fine in emulator so apparently TVB has changed their app to auto detect emulator and don't allow streaming in this manner. So now it is only possible to watch tvbanywhere using phones, or smart TV now.

Finally TVBAnywhere now has PC browser support. You can now login using Chrome, Edge or Safari browser and view drama on a PC. UI is similar to Netflix as usual but no profile support. Since TVB has 40 years worth of content, it is always easier to search for it. Recently broadcast drama for few years can be found on main page. Then the rest of the drama is separated into decades but there are simply too many to display.